## Witten Deformation on Non-compact Manifolds

### Mercredi 13 janvier 16:00-18:00 - Xianzhe Dai - Santa Barbara

Résumé : Witten deformation is a deformation of the de Rham complex introduced in an extremely influential paper by Witten. Witten deformation on closed manifolds has found many beautiful applications, among them the work of Bismut-Zhang on the Cheeger-M\"uller Theorem/Ray-Singer Conjecture. Development in mirror symmetry, in particular the Calabi-Yau/Landau-Ginzburg correspondence has highlighted the importance of mathematical study of Landau-Ginzburg models. This leads to a whole range of questions on the Witten deformation on non-compact manifolds. In this talk we will discuss our recent work, joint with Junrong Yan, on the $L^2$-cohomology, the heat asymptotic expansion, the local index theorem, and the Ray-Singer analytic torsion in this setting.

Lieu : Demander le lien Zoom à jean-michel.bismut@universite-paris-saclay.fr

Witten Deformation on Non-compact Manifolds  Version PDF
janvier 2021 :
 Département de Mathématiques Bâtiment 307 Faculté des Sciences d'Orsay Université Paris-Saclay F-91405 Orsay Cedex Tél. : +33 (0) 1-69-15-79-56 Département Fermeture du département Laboratoire Formation